[SOLVED] Java and geomapapp

business_kid · 10-07-2014, 04:26 AM

http://www.geomapapp.org

Geomapapp is something I want to run. I installed jdk-8u20 - the only version I could find to download for slackware-current, and I get this sort of error

Code:

bash-4.3$ java ./GeoMapApp.jar
Error: Could not find or load main class ..GeoMapApp.jar
bash-4.3$ javac ./GeoMapApp.jar
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/sun/tools/javac/Main : Unsupported major.minor version 52.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(Unknown Source)
	at java.security.SecureClassLoader.defineClass(Unknown Source)
	at java.net.URLClassLoader.defineClass(Unknown Source)
	at java.net.URLClassLoader.access$100(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
bash-4.3$ javaws ./GeoMapApp.jar
bash-4.3$ Error: A JNI error has occurred, please check your installation and try again
Error: A JNI error has occurred, please check your installation and try again

Is my java too new? Suggestions?

ndc85430 · 10-07-2014, 03:01 PM

For a start, you're running "java" incorrectly. You need to pass the -jar option when specifying JARs, i.e.

java -jar GeoMapApp.jar

business_kid · 10-08-2014, 02:38 AM

Thanks. I spotted that later.

I have Fedora 20 in a VM and it runs in that, so I can get a look at it there. Now I just have to figure it out!